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* ppp: potential NULL dereference in ppp_mp_explode()Dan Carpenter2010-09-131-2/+7
| | | | | | | | | | Smatch complains because we check whether "pch->chan" is NULL and then dereference it unconditionally on the next line. Partly the reason this bug was introduced is because code was too complicated. I've simplified it a little. Signed-off-by: Dan Carpenter <error27@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* net: autoconvert trivial BKL users to private mutexArnd Bergmann2010-07-121-10/+9
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | All these files use the big kernel lock in a trivial way to serialize their private file operations, typically resulting from an earlier semi-automatic pushdown from VFS. None of these drivers appears to want to lock against other code, and they all use the BKL as the top-level lock in their file operations, meaning that there is no lock-order inversion problem. Consequently, we can remove the BKL completely, replacing it with a per-file mutex in every case. Using a scripted approach means we can avoid typos. file=$1 name=$2 if grep -q lock_kernel ${file} ; then if grep -q 'include.*linux.mutex.h' ${file} ; then sed -i '/include.*<linux\/smp_lock.h>/d' ${file} else sed -i 's/include.*<linux\/smp_lock.h>.*$/include <linux\/mutex.h>/g' ${file} fi sed -i ${file} \ -e "/^#include.*linux.mutex.h/,$ { 1,/^\(static\|int\|long\)/ { /^\(static\|int\|long\)/istatic DEFINE_MUTEX(${name}_mutex); } }" \ -e "s/\(un\)*lock_kernel\>[ ]*()/mutex_\1lock(\&${name}_mutex)/g" \ -e '/[ ]*cycle_kernel_lock();/d' else sed -i -e '/include.*\<smp_lock.h\>/d' ${file} \ -e '/cycle_kernel_lock()/d' fi Signed-off-by: Arnd Bergmann <arnd@arndb.de> Cc: "David S. Miller" <davem@davemloft.net> Cc: netdev@vger.kernel.org Signed-off-by: David S. Miller <davem@davemloft.net>
* Merge branch 'master' of ↵David S. Miller2010-06-061-1/+1
|\ | | | | | | | | | | | | | | master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6 Conflicts: drivers/net/sfc/net_driver.h drivers/net/sfc/siena.c
| * ppp_generic: fix multilink fragment sizesBen McKeegan2010-06-041-1/+1
| | | | | | | | | | | | | | | | | | Fix bug in multilink fragment size calculation introduced by commit 9c705260feea6ae329bc6b6d5f6d2ef0227eda0a "ppp: ppp_mp_explode() redesign" Signed-off-by: Ben McKeegan <ben@netservers.co.uk> Signed-off-by: David S. Miller <davem@davemloft.net>
* | ppp: eliminate shadowed variable namestephen hemminger2010-06-021-3/+3
| | | | | | | | | | | | | | | | Sparse complains about shadowed declaration of skb. So use other name. Signed-off-by: Stephen Hemminger <shemminger@vyatta.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* | drivers/net: Use memdup_userJulia Lawall2010-05-311-8/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Use memdup_user when user data is immediately copied into the allocated region. The semantic patch that makes this change is as follows: (http://coccinelle.lip6.fr/) // <smpl> @@ expression from,to,size,flag; position p; identifier l1,l2; @@ - to = \(kmalloc@p\|kzalloc@p\)(size,flag); + to = memdup_user(from,size); if ( - to==NULL + IS_ERR(to) || ...) { <+... when != goto l1; - -ENOMEM + PTR_ERR(to) ...+> } - if (copy_from_user(to, from, size) != 0) { - <+... when != goto l2; - -EFAULT - ...+> - } // </smpl> Signed-off-by: Julia Lawall <julia@diku.dk> Signed-off-by: David S. Miller <davem@davemloft.net>
* | cleanup: remove MIN_FRAG_SIZE definition.Rami Rosen2010-05-311-1/+0
|/ | | | | | | | - This patch removes MIN_FRAG_SIZE definition in drivers/net/ppp_generic.c as it is unneeded. Signed-off-by: Rami Rosen <ramirose@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* driver core: add devname module aliases to allow module on-demand auto-loadingKay Sievers2010-05-251-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This adds: alias: devname:<name> to some common kernel modules, which will allow the on-demand loading of the kernel module when the device node is accessed. Ideally all these modules would be compiled-in, but distros seems too much in love with their modularization that we need to cover the common cases with this new facility. It will allow us to remove a bunch of pretty useless init scripts and modprobes from init scripts. The static device node aliases will be carried in the module itself. The program depmod will extract this information to a file in the module directory: $ cat /lib/modules/2.6.34-00650-g537b60d-dirty/modules.devname # Device nodes to trigger on-demand module loading. microcode cpu/microcode c10:184 fuse fuse c10:229 ppp_generic ppp c108:0 tun net/tun c10:200 dm_mod mapper/control c10:235 Udev will pick up the depmod created file on startup and create all the static device nodes which the kernel modules specify, so that these modules get automatically loaded when the device node is accessed: $ /sbin/udevd --debug ... static_dev_create_from_modules: mknod '/dev/cpu/microcode' c10:184 static_dev_create_from_modules: mknod '/dev/fuse' c10:229 static_dev_create_from_modules: mknod '/dev/ppp' c108:0 static_dev_create_from_modules: mknod '/dev/net/tun' c10:200 static_dev_create_from_modules: mknod '/dev/mapper/control' c10:235 udev_rules_apply_static_dev_perms: chmod '/dev/net/tun' 0666 udev_rules_apply_static_dev_perms: chmod '/dev/fuse' 0666 A few device nodes are switched to statically allocated numbers, to allow the static nodes to work. This might also useful for systems which still run a plain static /dev, which is completely unsafe to use with any dynamic minor numbers. Note: The devname aliases must be limited to the *common* and *single*instance* device nodes, like the misc devices, and never be used for conceptually limited systems like the loop devices, which should rather get fixed properly and get a control node for losetup to talk to, instead of creating a random number of device nodes in advance, regardless if they are ever used. This facility is to hide the mess distros are creating with too modualized kernels, and just to hide that these modules are not compiled-in, and not to paper-over broken concepts. Thanks! :) Cc: Greg Kroah-Hartman <gregkh@suse.de> Cc: David S. Miller <davem@davemloft.net> Cc: Miklos Szeredi <miklos@szeredi.hu> Cc: Chris Mason <chris.mason@oracle.com> Cc: Alasdair G Kergon <agk@redhat.com> Cc: Tigran Aivazian <tigran@aivazian.fsnet.co.uk> Cc: Ian Kent <raven@themaw.net> Signed-Off-By: Kay Sievers <kay.sievers@vrfy.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* Merge branch 'master' of ↵David S. Miller2010-05-031-12/+22
|\ | | | | | | master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6
| * ppp_generic: handle non-linear skbs when passing them to pppdSimon Arlott2010-05-031-1/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | Frequently when using PPPoE with an interface MTU greater than 1500, the skb is likely to be non-linear. If the skb needs to be passed to pppd then the skb data must be read correctly. The previous commit fixes an issue with accidentally sending skbs to pppd based on an invalid read of the protocol type. When that error occurred pppd was reading invalid skb data too. Signed-off-by: Simon Arlott <simon@fire.lp0.eu> Signed-off-by: David S. Miller <davem@davemloft.net>
| * ppp_generic: pull 2 bytes so that PPP_PROTO(skb) is validSimon Arlott2010-05-031-11/+18
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | In ppp_input(), PPP_PROTO(skb) may refer to invalid data in the skb. If this happens and (proto >= 0xc000 || proto == PPP_CCPFRAG) then the packet is passed directly to pppd. This occurs frequently when using PPPoE with an interface MTU greater than 1500 because the skb is more likely to be non-linear. The next 2 bytes need to be pulled in ppp_input(). The pull of 2 bytes in ppp_receive_frame() has been removed as it is no longer required. Signed-off-by: Simon Arlott <simon@fire.lp0.eu> Signed-off-by: David S. Miller <davem@davemloft.net>
* | Merge branch 'master' of ↵David S. Miller2010-04-111-0/+1
|\| | | | | | | | | | | | | | | | | | | | | | | master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6 Conflicts: drivers/net/stmmac/stmmac_main.c drivers/net/wireless/wl12xx/wl1271_cmd.c drivers/net/wireless/wl12xx/wl1271_main.c drivers/net/wireless/wl12xx/wl1271_spi.c net/core/ethtool.c net/mac80211/scan.c
| * include cleanup: Update gfp.h and slab.h includes to prepare for breaking ↵Tejun Heo2010-03-301-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | implicit slab.h inclusion from percpu.h percpu.h is included by sched.h and module.h and thus ends up being included when building most .c files. percpu.h includes slab.h which in turn includes gfp.h making everything defined by the two files universally available and complicating inclusion dependencies. percpu.h -> slab.h dependency is about to be removed. Prepare for this change by updating users of gfp and slab facilities include those headers directly instead of assuming availability. As this conversion needs to touch large number of source files, the following script is used as the basis of conversion. http://userweb.kernel.org/~tj/misc/slabh-sweep.py The script does the followings. * Scan files for gfp and slab usages and update includes such that only the necessary includes are there. ie. if only gfp is used, gfp.h, if slab is used, slab.h. * When the script inserts a new include, it looks at the include blocks and try to put the new include such that its order conforms to its surrounding. It's put in the include block which contains core kernel includes, in the same order that the rest are ordered - alphabetical, Christmas tree, rev-Xmas-tree or at the end if there doesn't seem to be any matching order. * If the script can't find a place to put a new include (mostly because the file doesn't have fitting include block), it prints out an error message indicating which .h file needs to be added to the file. The conversion was done in the following steps. 1. The initial automatic conversion of all .c files updated slightly over 4000 files, deleting around 700 includes and adding ~480 gfp.h and ~3000 slab.h inclusions. The script emitted errors for ~400 files. 2. Each error was manually checked. Some didn't need the inclusion, some needed manual addition while adding it to implementation .h or embedding .c file was more appropriate for others. This step added inclusions to around 150 files. 3. The script was run again and the output was compared to the edits from #2 to make sure no file was left behind. 4. Several build tests were done and a couple of problems were fixed. e.g. lib/decompress_*.c used malloc/free() wrappers around slab APIs requiring slab.h to be added manually. 5. The script was run on all .h files but without automatically editing them as sprinkling gfp.h and slab.h inclusions around .h files could easily lead to inclusion dependency hell. Most gfp.h inclusion directives were ignored as stuff from gfp.h was usually wildly available and often used in preprocessor macros. Each slab.h inclusion directive was examined and added manually as necessary. 6. percpu.h was updated not to include slab.h. 7. Build test were done on the following configurations and failures were fixed. CONFIG_GCOV_KERNEL was turned off for all tests (as my distributed build env didn't work with gcov compiles) and a few more options had to be turned off depending on archs to make things build (like ipr on powerpc/64 which failed due to missing writeq). * x86 and x86_64 UP and SMP allmodconfig and a custom test config. * powerpc and powerpc64 SMP allmodconfig * sparc and sparc64 SMP allmodconfig * ia64 SMP allmodconfig * s390 SMP allmodconfig * alpha SMP allmodconfig * um on x86_64 SMP allmodconfig 8. percpu.h modifications were reverted so that it could be applied as a separate patch and serve as bisection point. Given the fact that I had only a couple of failures from tests on step 6, I'm fairly confident about the coverage of this conversion patch. If there is a breakage, it's likely to be something in one of the arch headers which should be easily discoverable easily on most builds of the specific arch. Signed-off-by: Tejun Heo <tj@kernel.org> Guess-its-ok-by: Christoph Lameter <cl@linux-foundation.org> Cc: Ingo Molnar <mingo@redhat.com> Cc: Lee Schermerhorn <Lee.Schermerhorn@hp.com>
* | ppp: Add ppp_dev_name() exported functionJames Chapman2010-04-031-0/+19
|/ | | | | | | | | | ppp_dev_name() gives PPP users visibility of a ppp channel's device name. This can be used by L2TP drivers to dump the assigned PPP interface name. Signed-off-by: James Chapman <jchapman@katalix.com> Reviewed-by: Randy Dunlap <randy.dunlap@oracle.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* ppp_generic.c severly whitespace damanged by ↵Lennart Sorensen2010-01-191-61/+61
| | | | | | | | | | | | | | | | | | | | | | | 9c705260feea6ae329bc6b6d5f6d2ef0227eda0a I was just looking at ppp_generic, and noticed that it fairly recently (as in the last year) got rather mangled with many spaces turned into tabs in places they very much shouldn't have been. I tracked it down to commit 9c705260feea6ae329bc6b6d5f6d2ef0227eda0a (ppp: ppp_mp_explode() redesign). I am amazed if that patch passed the patch checking script. I have no idea what kind of weird editor setting did this, but it has to have been a weird editor setting or a very unfortunate search and replace gone wrong. I only found it trying to apply a patch I was playing with and wondering why it wouldn't apply. Then I found there were tabs in the middle of comments that used to be spaces. Well here is a patch that should fix it up as far as I can tell. Purely whitespace repair. No actual code changes. Signed-off-by: Len Sorensen <lsorense@csclub.uwaterloo.ca> Signed-off-by: David S. Miller <davem@davemloft.net>
* drivers/net: Move && and || to end of previous lineJoe Perches2009-12-031-33/+33
| | | | | | | | | | | | | | Only files where David Miller is the primary git-signer. wireless, wimax, ixgbe, etc are not modified. Compile tested x86 allyesconfig only Not all files compiled (not x86 compatible) Added a few > 80 column lines, which I ignored. Existing checkpatch complaints ignored. Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* net: Simplify ppp_generic pernet operations.Eric W. Biederman2009-12-011-23/+7
| | | | | | | | Take advantage of the new pernet automatic storage management, and stop using compatibility network namespace functions. Signed-off-by: Eric W. Biederman <ebiederm@xmission.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* netns: net_identifiers should be read_mostlyEric Dumazet2009-11-181-1/+1
| | | | | Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* ppp: fix BUG on non-linear SKB (multilink receive)Ben McKeegan2009-11-161-2/+9
| | | | | | | | | | | | | | | | | | | | PPP does not correctly call pskb_may_pull() on all necessary receive paths before reading the PPP protocol, thus causing PPP to report seemingly random 'unsupported protocols' and eventually trigger BUG_ON(skb->len < skb->data_len) in skb_pull_rcsum() when receiving multilink protocol in non-linear skbs. ppp_receive_nonmp_frame() does not call pskb_may_pull() before reading the protocol number. For the non-mp receive path this is not a problem, as this check is done in ppp_receive_frame(). For the mp receive path, ppp_mp_reconstruct() usually copies the data into a new linear skb. However, in the case where the frame is made up of a single mp fragment, the mp header is pulled and the existing skb used. This skb was then passed to ppp_receive_nonmp_frame() without checking if the encapsulated protocol header could safely be read. Signed-off-by: Ben McKeegan <ben@netservers.co.uk> Signed-off-by: David S. Miller <davem@davemloft.net>
* netdev: convert pseudo drivers to netdev_tx_tStephen Hemminger2009-09-011-1/+1
| | | | | | | These are all drivers that don't touch real hardware. Signed-off-by: Stephen Hemminger <shemminger@vyatta.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* ppp_generic: Help GCC see that 'flen' is always initialized.David S. Miller2009-08-191-0/+1
| | | | | | | | | | | | | | | | | It's too stupid to see that we always set flen to something before we use it in ppp_mp_explode(): drivers/net/ppp_generic.c: In function 'ppp_push': drivers/net/ppp_generic.c:1314: warning: 'flen' may be used uninitialized in this function drivers/net/ppp_generic.c:1314: note: 'flen' was declared here This started warning after commit a53a8b56827cc429c6d9f861ad558beeb5f6103f ("ppp: fix lost fragments in ppp_mp_explode() (resubmit)") So just put an explicit unconditional initialization there to hush it up. Signed-off-by: David S. Miller <davem@davemloft.net>
* Merge branch 'master' of ↵David S. Miller2009-08-121-16/+18
|\ | | | | | | | | | | | | master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6 Conflicts: arch/microblaze/include/asm/socket.h
| * ppp: fix lost fragments in ppp_mp_explode() (resubmit)Ben McKeegan2009-08-021-16/+18
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch fixes the corner cases where the sum of MTU of the free channels (adjusted for fragmentation overheads) is less than the MTU of PPP link. There are at least 3 situations where this case might arise: - some of the channels are busy - the multilink session is running in a degraded state (i.e. with less than its full complement of active channels) - by design, where multilink protocol is being used to artificially increase the effective link MTU of a single link. Without this patch, at most 1 fragment is ever sent per free channel for a given PPP frame and any remaining part of the PPP frame that does not fit into those fragments is silently discarded. This patch restores the original behaviour which was broken by commit 9c705260feea6ae329bc6b6d5f6d2ef0227eda0a 'ppp:ppp_mp_explode() redesign'. Once all 'free' channels have been given a fragment, an additional fragment is queued to each available channel in turn, as many times as necessary, until the entire PPP frame has been consumed. Signed-off-by: Ben McKeegan <ben@netservers.co.uk> Signed-off-by: David S. Miller <davem@davemloft.net>
* | net: use NETDEV_TX_OK instead of 0 in ndo_start_xmit() functionsPatrick McHardy2009-07-051-2/+2
|/ | | | | | | | | | | This patch is the result of an automatic spatch transformation to convert all ndo_start_xmit() return values of 0 to NETDEV_TX_OK. Some occurences are missed by the automatic conversion, those will be handled in a seperate patch. Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
* ppp: unset IFF_XMIT_DST_RELEASE in ppp_setup()Eric Dumazet2009-05-191-0/+1
| | | | | | | | Jarek pointed pppoe can call back dev_queue_xmit(), and might need skb->dst, so its safer to unset IFF_XMIT_DST_RELEASE on ppp devices. Signed-off-by: Eric Dumazet <dada1@cosmosbay.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* ppp: ppp_mp_explode() redesignGabriele Paoloni2009-03-131-91/+120
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | I found the PPP subsystem to not work properly when connecting channels with different speeds to the same bundle. Problem Description: As the "ppp_mp_explode" function fragments the sk_buff buffer evenly among the PPP channels that are connected to a certain PPP unit to make up a bundle, if we are transmitting using an upper layer protocol that requires an Ack before sending the next packet (like TCP/IP for example), we will have a bandwidth bottleneck on the slowest channel of the bundle. Let's clarify by an example. Let's consider a scenario where we have two PPP links making up a bundle: a slow link (10KB/sec) and a fast link (1000KB/sec) working at the best (full bandwidth). On the top we have a TCP/IP stack sending a 1000 Bytes sk_buff buffer down to the PPP subsystem. The "ppp_mp_explode" function will divide the buffer in two fragments of 500B each (we are neglecting all the headers, crc, flags etc?.). Before the TCP/IP stack sends out the next buffer, it will have to wait for the ACK response from the remote peer, so it will have to wait for both fragments to have been sent over the two PPP links, received by the remote peer and reconstructed. The resulting behaviour is that, rather than having a bundle working @1010KB/sec (the sum of the channels bandwidths), we'll have a bundle working @20KB/sec (the double of the slowest channels bandwidth). Problem Solution: The problem has been solved by redesigning the "ppp_mp_explode" function in such a way to make it split the sk_buff buffer according to the speeds of the underlying PPP channels (the speeds of the serial interfaces respectively attached to the PPP channels). Referring to the above example, the redesigned "ppp_mp_explode" function will now divide the 1000 Bytes buffer into two fragments whose sizes are set according to the speeds of the channels where they are going to be sent on (e.g . 10 Byets on 10KB/sec channel and 990 Bytes on 1000KB/sec channel). The reworked function grants the same performances of the original one in optimal working conditions (i.e. a bundle made up of PPP links all working at the same speed), while greatly improving performances on the bundles made up of channels working at different speeds. Signed-off-by: Gabriele Paoloni <gabriele.paoloni@intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* ppp: remove some pointless conditionals before kfree_skb()Wei Yongjun2009-02-261-4/+2
| | | | | | | Remove some pointless conditionals before kfree_skb(). Signed-off-by: Wei Yongjun <yjwei@cn.fujitsu.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* ppp_generic: Simplify tx_dropped statsPaulius Zaleckas2009-02-261-1/+1
| | | | | | | Local variable dev = ppp->dev Signed-off-by: Paulius Zaleckas <paulius.zaleckas@teltonika.lt> Signed-off-by: David S. Miller <davem@davemloft.net>
* drivers/net/ppp*.c: fix sparse warnings: fix signednessHannes Eder2009-02-171-1/+1
| | | | | | | | | | | Fix this sparse warnings: drivers/net/ppp_generic.c:919:43: warning: incorrect type in argument 1 (different signedness) drivers/net/pppoe.c:1195:43: warning: incorrect type in argument 1 (different signedness) drivers/net/pppol2tp.c:2666:43: warning: incorrect type in argument 1 (different signedness) Signed-off-by: Hannes Eder <hannes@hanneseder.net> Acked-by: Cyrill Gorcunov <gorcunov@openvz.org> Signed-off-by: David S. Miller <davem@davemloft.net>
* ppp: section fixes re netnsAlexey Dobriyan2009-02-091-1/+1
| | | | | | | PPP is modular code so no initdata on netns hooks. Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* net: ppp_generic - introduce net-namespace functionality v2Cyrill Gorcunov2009-01-211-77/+198
| | | | | | | | - Each namespace contains ppp channels and units separately with appropriate locks Signed-off-by: Cyrill Gorcunov <gorcunov@openvz.org> Signed-off-by: David S. Miller <davem@davemloft.net>
* net: ppp_generic - fix regressions caused by IDR conversionCyrill Gorcunov2009-01-121-6/+37
| | | | | | | | | | | | | | | | | | | | | | | The commits: 7a95d267fb62cd6b80ef73be0592bbbe1dbd5df7 ("net: ppp_generic - use idr technique instead of cardmaps") ab5024ab23b78c86a0a1425defcdde48710fe449 ("net: ppp_generic - use DEFINE_IDR for static initialization") introduced usage of IDR functionality but broke userspace side. Before this commits it was possible to allocate new ppp interface with specified number. Now it fails with EINVAL. Fix it by trying to allocate interface with specified unit number and return EEXIST if fail which allow pppd to ask us to allocate new unit number. And fix messages on memory allocation fails - add details that it's PPP module who is complaining. Signed-off-by: Cyrill Gorcunov <gorcunov@openvz.org> Signed-off-by: David S. Miller <davem@davemloft.net>
* Merge branch 'master' of ↵David S. Miller2008-12-231-15/+13
|\ | | | | | | | | | | | | | | master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6 Conflicts: drivers/net/ppp_generic.c
| * ppp: fix segfaults introduced by netdev_priv changesJames Chapman2008-12-181-15/+13
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch fixes a segfault in ppp_shutdown_interface() and ppp_destroy_interface() when a PPP connection is closed. I bisected the problem to the following commit: commit c8019bf3aff653cceb64f66489fc299ee5957b57 Author: Wang Chen <wangchen@cn.fujitsu.com> Date: Thu Nov 20 04:24:17 2008 -0800 netdevice ppp: Convert directly reference of netdev->priv 1. Use netdev_priv(dev) to replace dev->priv. 2. Alloc netdev's private data by alloc_netdev(). Signed-off-by: Wang Chen <wangchen@cn.fujitsu.com> Signed-off-by: David S. Miller <davem@davemloft.net> The original ppp_generic code treated the netdev and struct ppp as independent data structures which were freed separately. In moving the ppp struct into the netdev, it is now possible for the private data to be freed before the call to ppp_shutdown_interface(), which is bad. The kfree(ppp) in ppp_destroy_interface() is also wrong; presumably ppp hasn't worked since the above commit. The following patch fixes both problems. Signed-off-by: James Chapman <jchapman@katalix.com> Reviewed-by: Wang Chen <wangchen@cn.fujitsu.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* | net: ppp_generic - use DEFINE_IDR for static initializationCyrill Gorcunov2008-12-181-4/+2
| | | | | | | | | | | | | | | | | | | | We could use DEFINE_IDR for statically allocated idr that allow us to save a few lines of code. And spell fix. Signed-off-by: Cyrill Gorcunov <gorcunov@openvz.org> Signed-off-by: David S. Miller <davem@davemloft.net>
* | net: ppp_generic - use idr technique instead of cardmapsCyrill Gorcunov2008-12-171-135/+48
| | | | | | | | | | | | | | | | | | Use idr technique instead of own implemented cardmaps. It saves us a number of lines and gives an ability to use library functions. Signed-off-by: Cyrill Gorcunov <gorcunov@openvz.org> Signed-off-by: David S. Miller <davem@davemloft.net>
* | netdev: add more functions to netdevice opsStephen Hemminger2008-11-201-3/+2
| | | | | | | | | | | | | | | | | | | | | | | | This patch moves neigh_setup and hard_start_xmit into the network device ops structure. For bisection, fix all the previously converted drivers as well. Bonding driver took the biggest hit on this. Added a prefetch of the hard_start_xmit in the fast path to try and reduce any impact this would have. Signed-off-by: Stephen Hemminger <shemminger@vyatta.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* | netdevice ppp: Convert directly reference of netdev->privWang Chen2008-11-201-10/+5
| | | | | | | | | | | | | | | | 1. Use netdev_priv(dev) to replace dev->priv. 2. Alloc netdev's private data by alloc_netdev(). Signed-off-by: Wang Chen <wangchen@cn.fujitsu.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* | ppp: convert to net_device_opsStephen Hemminger2008-11-191-1/+5
| | | | | | | | | | | | | | Convert this driver to network device ops. Compile tested only. Signed-off-by: Stephen Hemminger <shemminger@vyatta.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* | drivers/net: Kill now superfluous ->last_rx stores.David S. Miller2008-11-031-1/+0
|/ | | | | | | | | | | | | The generic packet receive code takes care of setting netdev->last_rx when necessary, for the sake of the bonding ARP monitor. Drivers need not do it any more. Some cases had to be skipped over because the drivers were making use of the ->last_rx value themselves. Signed-off-by: David S. Miller <davem@davemloft.net>
* Merge git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core-2.6Linus Torvalds2008-10-161-2/+2
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core-2.6: (46 commits) UIO: Fix mapping of logical and virtual memory UIO: add automata sercos3 pci card support UIO: Change driver name of uio_pdrv UIO: Add alignment warnings for uio-mem Driver core: add bus_sort_breadthfirst() function NET: convert the phy_device file to use bus_find_device_by_name kobject: Cleanup kobject_rename and !CONFIG_SYSFS kobject: Fix kobject_rename and !CONFIG_SYSFS sysfs: Make dir and name args to sysfs_notify() const platform: add new device registration helper sysfs: use ilookup5() instead of ilookup5_nowait() PNP: create device attributes via default device attributes Driver core: make bus_find_device_by_name() more robust usb: turn dev_warn+WARN_ON combos into dev_WARN debug: use dev_WARN() rather than WARN_ON() in device_pm_add() debug: Introduce a dev_WARN() function sysfs: fix deadlock device model: Do a quickcheck for driver binding before doing an expensive check Driver core: Fix cleanup in device_create_vargs(). Driver core: Clarify device cleanup. ...
| * device create: net: convert device_create_drvdata to device_createGreg Kroah-Hartman2008-10-161-2/+2
| | | | | | | | | | | | | | | | | | Now that device_create() has been audited, rename things back to the original call to be sane. Cc: Jeff Garzik <jgarzik@pobox.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* | remove CONFIG_KMOD from driversJohannes Berg2008-10-171-7/+3
|/ | | | | | | | | | | | | Straight forward conversions to CONFIG_MODULE; many drivers include <linux/kmod.h> conditionally and then don't have any other conditional code so remove it from those. Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Cc: video4linux-list@redhat.com Cc: David Woodhouse <dwmw2@infradead.org> Cc: linux-ppp@vger.kernel.org Cc: dm-devel@redhat.com Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
* ppp: Use skb_queue_walk() in ppp_mp_insert().David S. Miller2008-10-091-1/+2
| | | | | | Instead of open-coded version. Signed-off-by: David S. Miller <davem@davemloft.net>
* ppp_generic: Use skb_peek() in ppp_receive_mp_frame().David S. Miller2008-09-231-3/+5
| | | | Signed-off-by: David S. Miller <davem@davemloft.net>
* net: Remove __skb_insert() calls outside of skbuff internals.David S. Miller2008-09-211-1/+1
| | | | | | | This minor cleanup simplifies later changes which will convert struct sk_buff and friends over to using struct list_head. Signed-off-by: David S. Miller <davem@davemloft.net>
* [PATCH] f_count may wrap aroundAl Viro2008-07-261-3/+3
| | | | | | | make it atomic_long_t; while we are at it, get rid of useless checks in affs, hfs and hpfs - ->open() always has it equal to 1, ->release() - to 0. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
* device create: net: convert device_create to device_create_drvdataGreg Kroah-Hartman2008-07-211-1/+2
| | | | | | | | | device_create() is race-prone, so use the race-free device_create_drvdata() instead as device_create() is going away. Cc: Jeff Garzik <jgarzik@pobox.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* Merge branch 'master' of ↵David S. Miller2008-07-181-0/+2
|\ | | | | | | | | | | | | | | | | | | | | | | | | master.kernel.org:/pub/scm/linux/kernel/git/torvalds/linux-2.6 Conflicts: Documentation/powerpc/booting-without-of.txt drivers/atm/Makefile drivers/net/fs_enet/fs_enet-main.c drivers/pci/pci-acpi.c net/8021q/vlan.c net/iucv/iucv.c
| * Add a bunch of cycle_kernel_lock() callsJonathan Corbet2008-06-201-1/+2
| | | | | | | | | | | | | | | | | | All of the open() functions which don't need the BKL on their face may still depend on its acquisition to serialize opens against driver initialization. So make those functions acquire then release the BKL to be on the safe side. Signed-off-by: Jonathan Corbet <corbet@lwn.net>
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